Overview
The AD4022BCPZ-RL7 is a high-accuracy, high-speed, low-power 20-bit successive approximation register (SAR) analog-to-digital converter (ADC) produced by Analog Devices Inc. This device operates from a single power supply and features an externally applied reference voltage that can be set independently of the supply voltage. The AD4022 is part of the AD4020/AD4021/AD4022 family, known for their Easy Drive technology, which reduces signal chain complexity and power consumption, enabling higher channel density.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Resolution | 20 | - | - | Bits |
| Analog Input Voltage Range | -VREF | - | +VREF | V |
| Operating Input Voltage (VIN+, VIN- to GND) | -0.1 | - | +VREF + 0.1 | V |
| Common-Mode Input Range | VREF/2 - 0.125 | - | VREF/2 + 0.125 | V |
| Common-Mode Rejection Ratio (CMRR) | - | - | 68 | dB |
| Throughput (Complete Cycle) | - | - | 2000 | ns |
| Conversion Time | 300 | - | 350 | ns |
| Acquisition Phase | 1770 | - | - | ns |
| Energy per Conversion | - | - | 8.3 | nJ/sample |
| Temperature Range | -40 | - | +125 | °C |
| Package | - | - | 10-Lead LFCSP (3mm x 3mm) | - |
Key Features
- Easy Drive Technology: Reduces signal chain complexity and power consumption, enabling higher channel density and eliminating the need for a dedicated ADC driver.
- Input Span Compression: Allows for the full ADC code range without the need for a negative supply to the ADC driver amplifier.
- Input Overvoltage Clamp: Protects the ADC inputs against overvoltage events, minimizing disturbances on the reference pin and eliminating the need for external protection diodes.
- High Accuracy and Speed: Offers high accuracy with a resolution of 20 bits and throughput rates of up to 500 kSPS.
- Low Power Consumption: Power scales linearly with throughput, making it energy-efficient.
- External Reference Voltage: Can be set independently of the supply voltage.
Applications
The AD4022BCPZ-RL7 is suitable for a variety of applications requiring high accuracy and low power consumption, such as:
- Industrial Automation: For precise measurement and control in industrial environments.
- Medical Devices: For high-accuracy data acquisition in medical equipment.
- Aerospace and Defense: For applications requiring robust and precise analog-to-digital conversion.
- Test and Measurement Equipment: For high-performance data acquisition systems.
Q & A
- What is the resolution of the AD4022BCPZ-RL7?
The AD4022BCPZ-RL7 has a resolution of 20 bits. - What is the maximum throughput rate of the AD4022BCPZ-RL7?
The maximum throughput rate is 500 kSPS. - What is the operating temperature range of the AD4022BCPZ-RL7?
The operating temperature range is from -40°C to +125°C. - Does the AD4022BCPZ-RL7 require a dedicated ADC driver?
No, the Easy Drive technology eliminates the need for a dedicated ADC driver. - What is the package type of the AD4022BCPZ-RL7?
The package type is a 10-Lead LFCSP (3mm x 3mm). - How does the input span compression feature work?
The input span compression feature allows for the full ADC code range without the need for a negative supply to the ADC driver amplifier. - What is the purpose of the input overvoltage clamp?
The input overvoltage clamp protects the ADC inputs against overvoltage events, minimizing disturbances on the reference pin and eliminating the need for external protection diodes. - Can the reference voltage be set independently of the supply voltage?
Yes, the reference voltage can be set independently of the supply voltage. - What is the energy consumption per conversion?
The energy consumption per conversion is 8.3 nJ/sample. - What are some typical applications of the AD4022BCPZ-RL7?
Typical applications include industrial automation, medical devices, aerospace and defense, and test and measurement equipment.
